20178687780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{547}}^1$

素因数の和:819

約数の個数: 288

約数和(自身を含む): 65490647040

約数和(自身を除く): 45311959260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 37, 45, 58, 60, 74, 87, 90, 111, 116, 145, 148, 174, 180, 185, 191, 222, 261, 290, 333, 348, 370, 382, 435, 444, 522, 547, 555, 573, 580, 666, 740, 764, 870, 955, 1044, 1073, 1094, 1110, 1146, 1305, 1332, 1641, 1665, 1719, 1740, 1910, 2146, 2188, 2220, 2292, 2610, 2735, 2865, 3219, 3282, 3330, 3438, 3820, 4292, 4923, 5220, 5365, 5470, 5539, 5730, 6438, 6564, 6660, 6876, 7067, 8205, 8595, 9657, 9846, 10730, 10940, 11078, 11460, 12876, 14134, 15863, 16095, 16410, 16617, 17190, 19314, 19692, 20239, 21201, 21460, 22156, 24615, 27695, 28268, 31726, 32190, 32820, 33234, 34380, 35335, 38628, 40478, 42402, 47589, 48285, 49230, 49851, 55390, 60717, 63452, 63603, 64380, 66468, 70670, 79315, 80956, 83085, 84804, 95178, 96570, 98460, 99702, 101195, 104477, 106005, 110780, 121434, 127206, 141340, 142767, 158630, 166170, 182151, 190356, 193140, 199404, 202390, 204943, 208954, 212010, 237945, 242868, 249255, 254412, 285534, 303585, 313431, 317260, 318015, 332340, 364302, 404780, 409886, 417908, 424020, 475890, 498510, 522385, 571068, 586931, 607170, 614829, 626862, 636030, 713835, 728604, 819772, 910755, 940293, 951780, 997020, 1024715, 1044770, 1173862, 1214340, 1229658, 1253724, 1272060, 1427670, 1567155, 1760793, 1821510, 1844487, 1880586, 2049430, 2089540, 2347724, 2459316, 2855340, 2934655, 3029833, 3074145, 3134310, 3521586, 3643020, 3688974, 3761172, 3865649, 4098860, 4701465, 5282379, 5869310, 6059666, 6148290, 6268620, 7043172, 7377948, 7731298, 8803965, 9089499, 9222435, 9402930, 10564758, 11596947, 11738620, 12119332, 12296580, 15149165, 15462596, 17607930, 18178998, 18444870, 18805860, 19328245, 21129516, 23193894, 26411895, 27268497, 30298330, 34790841, 35215860, 36357996, 36889740, 38656490, 45447495, 46387788, 52823790, 54536994, 57984735, 60596660, 69581682, 77312980, 90894990, 105647580, 109073988, 112103821, 115969470, 136342485, 139163364, 173954205, 181789980, 224207642, 231938940, 272684970, 336311463, 347908410, 448415284, 545369940, 560519105, 672622926, 695816820, 1008934389, 1121038210, 1345245852, 1681557315, 2017868778, 2242076420, 3363114630, 4035737556, 5044671945, 6726229260, 10089343890, 20178687780]

約数ペア:

[(1, 20178687780), (2, 10089343890), (3, 6726229260), (4, 5044671945), (5, 4035737556), (6, 3363114630), (9, 2242076420), (10, 2017868778), (12, 1681557315), (15, 1345245852), (18, 1121038210), (20, 1008934389), (29, 695816820), (30, 672622926), (36, 560519105), (37, 545369940), (45, 448415284), (58, 347908410), (60, 336311463), (74, 272684970), (87, 231938940), (90, 224207642), (111, 181789980), (116, 173954205), (145, 139163364), (148, 136342485), (174, 115969470), (180, 112103821), (185, 109073988), (191, 105647580), (222, 90894990), (261, 77312980), (290, 69581682), (333, 60596660), (348, 57984735), (370, 54536994), (382, 52823790), (435, 46387788), (444, 45447495), (522, 38656490), (547, 36889740), (555, 36357996), (573, 35215860), (580, 34790841), (666, 30298330), (740, 27268497), (764, 26411895), (870, 23193894), (955, 21129516), (1044, 19328245), (1073, 18805860), (1094, 18444870), (1110, 18178998), (1146, 17607930), (1305, 15462596), (1332, 15149165), (1641, 12296580), (1665, 12119332), (1719, 11738620), (1740, 11596947), (1910, 10564758), (2146, 9402930), (2188, 9222435), (2220, 9089499), (2292, 8803965), (2610, 7731298), (2735, 7377948), (2865, 7043172), (3219, 6268620), (3282, 6148290), (3330, 6059666), (3438, 5869310), (3820, 5282379), (4292, 4701465), (4923, 4098860), (5220, 3865649), (5365, 3761172), (5470, 3688974), (5539, 3643020), (5730, 3521586), (6438, 3134310), (6564, 3074145), (6660, 3029833), (6876, 2934655), (7067, 2855340), (8205, 2459316), (8595, 2347724), (9657, 2089540), (9846, 2049430), (10730, 1880586), (10940, 1844487), (11078, 1821510), (11460, 1760793), (12876, 1567155), (14134, 1427670), (15863, 1272060), (16095, 1253724), (16410, 1229658), (16617, 1214340), (17190, 1173862), (19314, 1044770), (19692, 1024715), (20239, 997020), (21201, 951780), (21460, 940293), (22156, 910755), (24615, 819772), (27695, 728604), (28268, 713835), (31726, 636030), (32190, 626862), (32820, 614829), (33234, 607170), (34380, 586931), (35335, 571068), (38628, 522385), (40478, 498510), (42402, 475890), (47589, 424020), (48285, 417908), (49230, 409886), (49851, 404780), (55390, 364302), (60717, 332340), (63452, 318015), (63603, 317260), (64380, 313431), (66468, 303585), (70670, 285534), (79315, 254412), (80956, 249255), (83085, 242868), (84804, 237945), (95178, 212010), (96570, 208954), (98460, 204943), (99702, 202390), (101195, 199404), (104477, 193140), (106005, 190356), (110780, 182151), (121434, 166170), (127206, 158630), (141340, 142767)]